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Quiz 1.2: The Chemistry of Life

Total questions: 85

Worksheet time: 55mins

Name
Class
Date
1.

When is an ionic bond formed?

a)

when electrons are shared

b)

when protons are shared

c)

when oppositely charged atoms gain or lose electrons

d)

when oppositely charged atoms gain or lose a proton

2.

What makes carbon so important to life?

a)

bonding properties

b)

its place on the Periodic Table

c)

it is a reactant in all chemical reactions

d)

it is an enzyme

3.

What gives water so many important properties for life?

a)

adhesion and cohesion

b)

the amount of carbon in each molecule

c)

energy released exothermically

d)

hydrogen bonds give it polarity

4.

What are the smallest basic units of matter?

a)

molecules

b)

atoms

c)

elements

d)

7th graders

5.

Atoms that share electrons are

a)

in a covalent bond

b)

in an ionic bond

c)

are usually salts

d)

always metals

6.

What are the 4 types of carbon-based molecules in organisms?

a)

carbohydrates, lipids, fatty acids, and monomers

b)

polymers, monomers, acids, bases

c)

adhesion, cohesion, evaporative cooling, and high specific heat

d)

nucleic acids, proteins, lipids, and carbohydrates

7.

What are proteins made of?

a)

amino acids

b)

monosaccharides

c)

nucleic acids

d)

fatty acids

8.

Which carbon-based molecule includes sugar and starches?

a)

carbohydrates

b)

lipids

c)

proteins

d)

nucleic acids

9.

What is the primary function of DNA?

a)

to make nucleic acids

b)

long term energy storage

c)

store genetic information

d)

to function as RNA

10.

The building blocks of most living things contain the element

a)

carbon

b)

nitrogen

c)

calcium

d)

sodium

11.
Which is NOT one of the four elements that make up over 90% of the human body
a)
Carbon
b)
Nitrogen
c)
Chlorine 
d)
Oxygen
12.
Which of the following is NOT true of atoms?
a)
They are composed of molecules.
b)
They can combine with other atoms.
c)
They make up elements
d)
They are extremely small
13.
A negatively charged particle moving around the nucleus of an atom
a)
neutron
b)
proton
c)
electron 
d)
ion
14.
What particle is found in the nucleus and has no charge?
a)
electron
b)
neutron
c)
proton
d)
atom
15.
An atom becomes negatively charged by
a)
gaining an electron
b)
losing an electron
c)
losing a proton
gaining a neutron
16.
The space surrounding the nucleus of an atom contains
a)
protons
b)
electrons
c)
neutrons
d)
ions
17.
Number of protons that an atom has
a)
Atomic symbol
b)
Atomic Number
c)
Atomic Mass
d)
Mass Number
18.
What determines the chemical properties of an atom?
a)
The number of protons in the nucleus
b)
Number of electrons in the outside shell
c)
The number of protons in the outside shell
d)
The number of electrons in the nucleus
19.
Two or more atoms combined
a)
Molecule
b)
Compound
c)
Isotope
d)
Ion
20.
Two or more different atoms combined
a)
Molecule
b)
Compound
c)
Isotope
d)
Ion
21.
Bond created by electrical attraction between atoms (+ and -)
a)
Ionic bond
b)
Covalent bond
c)
Hydrogen bond
d)
van der Waals
22.
A charged atoms (caused by gain or loss of electrons)
a)
Ion
b)
molecule
c)
element
d)
compound
23.
Attractions between molecules of the same substance
a)
adhesion
b)
cohesion
c)
mixture
d)
acid
24.
Who am I? I'm a polymer composed of amino acids that are linked by peptide bonds. Amino acid bonds determine my folds. 
a)
Lipid
b)
Carbohydrate
c)
Protein
d)
Sugar
25.
What is the main function of nucleic acids?
a)
To function in insulation.
b)
To store and transmit hereditary information.
c)
To provide energy
26.
What are the monomers of carbohydrates?
a)
Amino acids
b)
Fatty acids
c)
Nucleotides
d)
Monosaccharides (simple sugars)
27.
Most enzymes — 
a)
Speed up the chemical reaction
b)
Have no effect on the rate of the chemical reaction 
c)
Keep the rate of the chemical reaction the same
d)
Slow the rate of the chemical reaction 
28.
All carbohydrates are —
a)
composed of carbon, hydrogen and oxygen atoms
b)
are made of amino acids
c)
composed of carbon, hydrogen, oxygen and nitrogen atoms
d)
composed of carbon, hydrogen, oxygen, nitrogen and phosphorus atoms
 D are made of fatty acids 
29.
When people eat foods high in proteins, such as meat, eggs and cheese, the body breaks down the proteins into smaller molecules. What is supplied to cells when the body breaks down proteins?
a)
amino acids
b)
nucleic acids
c)
phospholipids
d)
carbohydrates
30.
What type of molecule provides immediate energy in cells?  
a)
lipids
b)
proteins
c)
carbohydrates
d)
nucleic acids
31.
Animal cells have four main molecules that keep the body healthy. What type of molecule in animal cells provides a “map” for making proteins?
a)
lipids 
b)
proteins
c)
nucleic acids
d)
carbohydrates
32.
The cells in living things contain four main molecules that allow the cells to function. Which of these molecules cannot mix with water?
a)
lipids
b)
proteins
c)
nucleic acids
d)
carbohydrates
33.
Plants store glucose in the form of
a)
starch
b)
glycogen
c)
cellulose
d)
chitin
34.
Which type of carbohydrate is this?
a)
monosaccharide
b)
disaccharide
c)
polysaccharide
d)
glyceride
35.
Which is NOT a unique property of water?
a)
Frozen water floats on liquid water.
b)
Water covers most of the Earth’s surface and retains a large amount of heat.
c)
Water molecules stick to each other through hydrogen bonds.
d)
Water cools very rapidly.
36.
What property of water helps to moderate earth's temperature?
a)
adhesion
b)
chohesion
c)
Specific heat capacity
d)
Latent heat of vaporization
37.

Carbon is called the element of life because

a)

It can bond with itself in different ways

b)

It forms four covalent bonds

c)

It is found in all living things

d)

All of these answers are correct

38.

Water's ability to dissolve many substances arises from:

a)

Water molecules being polar

b)

Water molecules being non-polar

c)

Water's high heat capacity

d)

Water being hydrophobic in nature

39.

The three particles that make up an atom are

a)

protons, neutrons, and isotopes

b)

protons, neutrons, and electrons

c)

positives, negatives, electrons

d)

protons, ions, and electrons

40.

The nucleus is made up of

a)

protons and electrons

b)

protons, neutrons, and electrons

c)

neutrons

d)

protons and neutrons

41.

mass number

a)

number of protons

b)

number of electrons

c)

number of protons and electrons

d)

number of protons and neutrons

42.
A slight attraction that develops between the oppositely charged regions of nearby molecules
a)
electromagnetic force
b)
gravity
c)
van der Waals forces
d)
polarity
43.
The electrons involved in chemical bonds are called ___________ electrons.
a)
valence
b)
ionic
c)
Van Der Waals
d)
covalent
44.
Includes DNA and RNA
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic Acids
45.
Which is an example of a carbohyrdate?
a)
wax
b)
bread
c)
DNA
d)
red meat
46.
Which is an example of a lipid
a)
fat
b)
starch
c)
glucose
d)
hemoglobin
47.
Glucose (sugar) is an example of a
a)
Carbohydrate
b)
Lipid
c)
Protein
d)
Nucleic Acid
48.

Provides long term energy, insulation, and protection for cells

a)

lipids

b)

carbohydrates

c)

nucleic acids

d)

proteins

49.
Attraction between molecules of different substances
a)
Adhesion
b)
Cohesion
c)
Polarity
50.
Why does ice float?
a)
As water freezes, it expands and its density decreases.
b)
As water freezes, it takes up more hydrogen from the atmosphere, causing it to have a greater buoyancy.
c)
As water freezes, air becomes trapped between the hydrogen bonds of water molecules.
d)
As water freezes, it takes up more oxygen from the atmosphere, causing it to have a greater buoyancy.
51.
Water is a universal solvent because it...
a)
It can be found anywhere
b)
It freezes when it gets cold
c)
floats when frozen
d)
Dissolves most substances
52.
The fact that ice floats on liquid water is due to the fact that water's solid is ___________ than it's liquid form
a)
less polar
b)
more polar
c)
less dense
d)
more dense
53.
Water striders can walk across the surface of calm water. Their feet push the surface of the water down slightly, but they do not break the surface. Why?
a)
The insects are light enough so they do not break the hydrogen bonds holding the water molecules together
b)
The insects actually use their wings to hover slightly above the water’s surface and they only skim it with their feet.
c)
The insect’s feet are non-polar, so they are repelled by the polar water molecules and are pushed away from the water’s surface.
d)
The insects are small enough to see the individual water molecules, so they are able to step carefully from one molecule to the next
54.

Anything that takes up space and has mass

a)

Matter

b)

Compounds

c)

Theories

d)

Don't pick this one

55.

What is the small molecule of Lipids

a)

Amino Acids

b)

Fatty Acids

c)

Carbohydrates

d)

Nucleotides

56.

What is the small molecule of Nucleic Acids

a)

Amino Acids

b)

Fatty Acids

c)

Carbohydrates

d)

Nucleotides

57.

Which type of bond represents a weak chemical bond?

a)

Covalent bond

b)

ionic bond

c)

hydrogen bond

d)

polar covalent bond

58.
What type of macromolecule is being represented in this image? 
a)
carbohydrate
b)
lipid
c)
protein
d)
nucleic acid
59.
What are the single sugars that are the building blocks of carbohydrates?
a)
monosaccharides
b)
disaccharides
c)
polysaccharides
d)
amino acid
60.

A single unit that can bond to other single units to form a polymer is a:

a)

Lego

b)

Monounits

c)

Monopoly

d)

Monomer

61.

Many monomers bonded together form a:

a)

Multimer

b)

Polygon

c)

Polymer

d)

Manymer

62.

An example of a food with lots of lipids would be?

a)

Bread

b)

Oranges

c)

Butter

d)

Lettuce

63.

Every compound is a molecule but not every molecule is a compound.

a)

True

b)

False

64.

fill in the blank

Cells >____> organs > Organ systems

a)

organism

b)

atom

c)

organelle

d)

tissue

65.

Which compound is organic?

a)

CO2

b)

C6H12O6

66.

Organic substances are molecules associated with living organisms- Organic substances all contain carbon

a)

True

b)

False

67.

What are the TWO building blocks of lipids?

a)

Glycogen

b)

Glycerol

c)

Glycerin

d)

Fatty acids

68.
DNA and RNA are examples of...
a)
proteins
b)
nucleic acids
c)
carbohydrates
d)
lipids
69.
These molecules are examples of _________.
a)
amino acids
b)
triglycerides
c)
monosaccharides
d)
lipids
70.
How many protons does the element have if the atomic number is 19 and the atomic mass is 40?
a)
40
b)
19
c)
21
d)
59
71.

____, H, O, N make up 96% of living matter.

a)

F

b)

Na

c)

P

d)

C

72.

The process by which a polymer is split into its monomers is called

a)

dehydration

b)

hydrolysis

73.

A protein is _____________ when it loses its shape and ability to function because of hear, a change in pH or some other disturbance.

a)

dehydrated

b)

neutralized

c)

denatured

d)

hydrolyzed

74.

The two types of fatty acids are _______________ and _________________.

a)

trans-saturated

b)

saturated

c)

unsaturated

d)

cis-saturated

75.

Hydrolysis is involved in which of the following?

a)

formation of starch, a polysaccharide, from monomers of glucose

b)

peptide bond formation between amino acids to form a protein

c)

the digestion of sucrose, a disaccharide to its monomers of glucose and fructose

d)

hydrogen bond formation between nitrogen bases of nucleic acids

76.

How many different amino acids are there?

a)

3

b)

20

c)

64

d)

61

77.

What is true about hydrogen bonds?

a)

They are relatively weak

b)

They are involved in the structure of DNA

c)

They occur between hydrogen and more electronegative atoms like oxygen

d)

All of the above

78.

Where does a peptide bond form?

a)

between the five-carbon sugar of one nucleotide and the phosphate group of another nucleotide

b)

between the R group of one amino acid and the carboxyl group of another amino acid

c)

between the amino group of one amino acid and the carboxyl group of another amino acid

d)

between the nitrogenous base of one nucleotide and the phosphate group of another nucleotide

79.

What type of lipid is estrogen?

a)

steroid

b)

phospholipid

c)

triglyceride

d)

wax

80.

Lactose (milk sugar) is a carbohydrate that is formed by combining galactose and glucose.

Which term best describes this molecule?

a)

monosaccharide

b)

disaccharide

c)

monomer

d)

starch

81.
Why does water move from the roots to the leaves of plants?
a)
Water is pushed by solutes
b)
Capillary action pulls the water molecules in a process called transpiration
c)
Water is pulled by gravity
d)
Water’s cohesion causes it to “pull” towards the leaves
82.
What is created by photosynthesis?
a)
Fiber
b)
Glucose
c)
Lactose
d)
Galactose
83.
Which is not a monomer?
a)
nucelotide
b)
protein
c)
glucose
d)
amino acid
84.

Why are chemistry and biology inherently related subjects?

a)

Both are about matter ("stuff"). Bio is more specific to living things

b)

Chem is based on atoms/molecules and their interactions. Living things function due to atoms/molecules

c)

The functioning of living things is due to chemistry/chemical reactions/molecular interactions (i.e. metabolism)

d)

All answers are correct

85.

In an ionic bond the metal atom loses one or more electrons to become _ in charge. This type of ion is called a(n) _

a)

Positive, cation

b)

Positive, anion

c)

Negative, cation

d)

Negative, anion

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